VERY slow sms typingkeyboard iPhone 3G

Take it to your AT &T or Apple store ASAP, this should not be happening with a $200 device
20 " Imac Intel/MacBook Pro 15"/iPhone 3G Mac OS X (10.5.4) 2G SDRAM, 250GB Serial ATA, 256MB GDDR3 memory

i actually live in Australia and there are now apple centres and Optus cannot really help me. If it isnt happening to anybody elses then i should get it checked? I was hoping that it was a software issue, and that the 2.1 update would fix it.
MacBook Pro 17" 2.4ghz Intel Core 2 Duo Mac OS X (10.4.11) 1 TB IOMEGA External Hard Drive. Windows Vista Ultimate (Parallels), iPod Video

Hi there,
I live in Australia as well, I have been to the apple store in Sydney about 5 times with this issue and contacts lag.
They say its a software issue, I have had my phone replaced and it still occurs, so I would be guessing its software too.
If 2.1 doesnt fix it (you should be able to get it this Saturday in Australia) I for one, am not going to be happy and will be taking my phone straight back to optus and demanding a refund.
If it still happens after 2.1, i would encourage you to do the same if it bothers you.
Mac OS X (10.5.4)

Thanks for all your replies. i had read somewhere that it may be a memory leak from one application, but now i know it probably isnt. thanks for all your help. ill reply back with the status after saturday an the update
MacBook Pro 17" 2.4ghz Intel Core 2 Duo Mac OS X (10.5.4) 1 TB IOMEGA External Hard Drive. Windows Vista Ultimate (Parallels), iPod Video

I didnt start experiencing this until I got 2.0.2 update. My fix is to hard boot by holding the home key and the off key together until the apple logo shows up. It doesnt happen all the time, just randomly. Hopefully the 2.1 update will help?
HP & Dell & Iphone 3G